Answer: C) Issue advocacy
Step-by-step explanation:
Issue advocacy is defined as the interaction,communication, campaign technique used for the purpose of creating awareness among people on any particular issue or crisis.Interest advocacy groups tend to raise the subject to advocate against it,for it or balancing it.
They display ads for communicating and educating people about the issue that can influence the organization, individuals, political parties etc.
Other options are incorrect because bundling is gather of two or more things togather. Direct is straight forward manner and soft-money spending is the money made by parties and committee which is spent in whatever manner they want.Thus, the correct option is option(C).